The Grammy Awards nomination party is set to be a pop spectacular - Katy Perry and Justin Bieber have signed up to perform at the event.
The pop pair will hit the stage at the Grammy Nominations Concert Live!! - Countdown To Music's Biggest Night event on 1 December (10).
Country star Miranda Lambert, Bruno Mars and rapper B.o.B will also perform.
LL Cool J will host the one-hour special for a second year.
The actual Grammys will take place in Los Angeles on 13 February (11).